:root{
      --bg:#f4f7ff;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#172033;
      --muted:#5e6a84;
      --line:#d9e2f2;
      --primary:#2563eb;
      --primary2:#7c3aed;
      --accent:#12b3b0;
      --shadow:0 18px 50px rgba(31, 61, 123, .10);
      --shadow2:0 10px 30px rgba(37, 99, 235, .12);
      --radius:22px;
      --container:1160px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(37,99,235,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(124,58,237,.10), transparent 24%),
        linear-gradient(180deg,var(--bg),#fff 38%,#f7f9ff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px);background:rgba(244,247,255,.78);border-bottom:1px solid rgba(217,226,242,.8)}
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:5px;border:1px solid var(--line)}
    .brand .name{font-weight:800;font-size:18px;line-height:1.1}
    .brand .sub{font-size:12px;color:var(--muted);margin-top:3px}
    nav{display:flex;align-items:center;gap:14px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:var(--muted);font-weight:600}
    .nav-links a:hover{color:var(--primary)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:12px 18px;font-weight:700;transition:.25s ease;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:var(--shadow2)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.22fr .78fr;gap:24px;align-items:stretch}
    .hero-card,.info-card,.section-card,.form-card,.quote-card,.faq-item,.review-card,.mini-card,.compare-card,.article-card,.case-card{background:var(--card);border:1px solid rgba(217,226,242,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:34px;position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:50%;filter:blur(3px);pointer-events:none}
    .hero-card:before{width:240px;height:240px;background:radial-gradient(circle, rgba(37,99,235,.14), transparent 70%);right:-70px;top:-60px}
    .hero-card:after{width:180px;height:180px;background:radial-gradient(circle, rgba(124,58,237,.12), transparent 72%);left:-60px;bottom:-70px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(37,99,235,.08);color:var(--primary);font-size:13px;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(30px,4.3vw,54px);line-height:1.06;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
    .tag{padding:8px 12px;border-radius:999px;background:#f4f7ff;border:1px solid var(--line);font-size:13px;color:#31415d;font-weight:600}
    .hero-aside{display:grid;gap:16px}
    .info-card{padding:22px}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#f8fbff,#f4f7ff);border:1px solid #e1e9f6}
    .stat strong{display:block;font-size:24px;line-height:1.1}
    .stat span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.4}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(22px,2.8vw,34px)}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.7}
    .section-card{padding:24px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .mini-card{padding:18px}
    .mini-card h3,.review-card h3,.case-card h3,.article-card h3{margin:0 0 10px;font-size:18px}
    .mini-card p,.review-card p,.case-card p,.article-card p,.faq-item p{margin:0;color:var(--muted);line-height:1.75}
    .icon-dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));display:inline-block;margin-right:8px;box-shadow:0 0 0 6px rgba(37,99,235,.08)}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid var(--line);position:relative}
    .step .num{font-size:13px;font-weight:800;color:var(--primary)}
    .step h3{margin:10px 0 8px;font-size:17px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:780px}
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid #e8eef8;vertical-align:top}
    th{background:#f6f9ff;color:#20304c;font-size:14px}
    td{color:#31415d}
    .highlight{font-weight:800;color:#0f3baf}
    .compare-badge{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:16px;background:linear-gradient(135deg,rgba(37,99,235,.10),rgba(124,58,237,.10));color:#173c99;font-weight:800}
    .price-list,.timeline,.cloud,.links-list{display:flex;flex-wrap:wrap;gap:10px}
    .price-item,.cloud a,.links-list a{padding:10px 12px;border:1px solid var(--line);border-radius:14px;background:#fff;color:#33415c;font-size:14px}
    .timeline{flex-direction:column;gap:12px}
    .timeline-item{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:start;padding:14px 16px;border-radius:18px;background:#fbfcff;border:1px solid var(--line)}
    .timeline-item strong{color:var(--primary)}
    .faq-list{display:grid;gap:12px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;background:#fff;border:none;padding:18px 20px;font-size:16px;font-weight:700;color:var(--text);text-align:left;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 20px}
    .faq-item.open .faq-a{max-height:180px;padding-bottom:18px}
    .faq-item.open .faq-q .chev{transform:rotate(180deg)}
    .chev{transition:.25s ease;color:var(--primary)}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-card{padding:20px}
    .review-meta{margin-top:14px;font-size:13px;color:var(--primary);font-weight:700}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article-card{padding:18px}
    .case-card{padding:20px}
    .case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .case-tags span{padding:8px 10px;border-radius:999px;background:#f3f7ff;border:1px solid var(--line);font-size:12px;color:#4b5b76}
    .form-card{padding:24px}
    form{display:grid;gap:14px}
    .form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid #d8e1f0;background:#fff;color:var(--text);font:inherit;outline:none;
    }
    textarea{min-height:128px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(37,99,235,.55);box-shadow:0 0 0 4px rgba(37,99,235,.10)}
    .footer{margin-top:8px;padding:26px 0 30px;border-top:1px solid rgba(217,226,242,.9);background:rgba(255,255,255,.45)}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer p,.footer a{color:#394a67}
    .footer small{color:#62718d}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:var(--shadow2);border:none}
    .qrcode-box{display:flex;gap:14px;align-items:center}
    .qrcode-box img{width:118px;height:118px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .center{text-align:center}
    .marquee{display:grid;gap:12px}
    .skeleton-line{height:12px;border-radius:999px;background:linear-gradient(90deg,#eef3ff,#dfe8fb,#eef3ff);background-size:200% 100%;animation:shimmer 2s linear infinite}
    @keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.workflow,.reviews,.articles,.footer-grid{grid-template-columns:1fr}
      nav{display:none}
      .menu-toggle{display:inline-flex}
      .nav-open nav{display:block;position:absolute;left:16px;right:16px;top:70px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--shadow)}
      .nav-open .nav-links{flex-direction:column;align-items:flex-start;gap:12px}
      .nav-open .nav-actions{margin-top:12px}
      .timeline-item,.form-row{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      .hero-card,.section-card,.form-card{padding:20px}
      .topbar{padding:12px 0}
      .brand .name{font-size:16px}
      .hero-actions .btn,.nav-actions .btn{width:100%}
      .hero-actions,.nav-actions{flex-direction:column;align-items:stretch}
      .stat-grid{grid-template-columns:1fr}
      .table-wrap{margin-right:-8px}
      .floating{right:12px;bottom:12px}
    }